The description of Near Time Flow sounds very interesting. A free-form database where you throw text snippets, regardless of source. The software records the sources along with the snippets. You can edit and expand the snippets. You can travel through time and view older states. You can access the original sources and overlay Flow data on top of them. You can send data to other users in a peer-to-peer network fashion, with Flow automatically determining which transmission method works best. You can access your data stocks via RSS and perform full-text searches. And all of this with a nice OS X interface.
Somehow it sounds like something Tinderbox could have been if it had been conceived much more openly.
And above all, it sounds like it comes much closer to the idealtypical Zettelkasten. Tinderbox with its agents and links is quite nice, but Flow sounds like the Zettelkasten nirvana could be reached.
At PragDave there's the original article.